MIL recently went on a diet as she felt she had put on weight. She's not a big lady by any means, I'd say a size 10, maybe 12.
She did it, lost her weight and obviously must have been happy with the outcome.
When DH told me, I was absolutely horrified at the prospect of someone at that stage of life feeling the need to diet. To put it in context, I love my food, only ever dieted once for my wedding and hated every minute of it.
AIBU to think this is strange behaviour? Concern about my figure certainly won't be up there on my list of priorities when I'm hitting 70.